Pivoted locking means for lines



Dec. 8, 1953 v. MARTIN 2,661,514

' PIVOTED LOCKING MEANS FOR LINES Filed April 11, 1951 2 Sheets-Sheet 1 B MM Dc. s, 1953 v. MARTIN 2,661,514

PIVOTED LOCKING MEANS FOR LINES Filed April 11, 1951 2 Sheets-Sheet 2 Z'ZGQ JZGZO Inventor Z87. M

i B 01 M.

ttom e y Patented 15cc. 8

PIVOTED LOCKIN G MEANS FOR LINES Victor Martin,

Martin and Parkstone, England; Amelia Ada Doris Attwell, administratrices of said Victor Martin, deceased Application April 11, 1951, Serial No. 220,467

Claims priority, application Great Britain I May 26, 1950 2 Claims. (01.24-134) The present invention relates to an improved line lock for a cable, cord or line, for example, a line used in a kitchen for domestic purposes.

An object is to produce a simple and eflicient line lock which is simple in construction, easy to assemble, has great mechanical advantage, and includes the novel features of construction, arrangement and operation hereinafter described.

A preferred form of the invention will now be described with reference to the diagrammatic drawings in which:

Figure 1 is an elevation of the locking means,

Figure 2 is a side elevation thereof,

Figure 3 is an elevation of the same locking means but with the cover plate removed,

Figures 4, 5 and 6 are respectively a plan, side and end elevation of a lever, also shown in the other figures,

Figure 7 is a front elevation of a line lock,

Figures 8 and 9 are end elevations respectively of a base plate shown in Figure 7 and Figure 10 is a sectional elevation of a wall plate also shown in Figure 7.

The line lock illustrated in Figures 1 to 6 (provisional specification) comprises a rectangular base plate l formed at its top and bottom with apertured lugs H and 12 respectively, with the aid of which the device may be secured, in the position shown on the figures, to a wall or the like.

At its left hand side the base plate is cut away as at I3 and I 4 to leave room for the line L which is to be locked. The base plate is also formed with a V-shaped cutaway I5, I6 running into a notch l1 and a parallel sided channel 18.

Fixed on the base plate is a pivot l9 for a twoarmed lever 20 of unequal arms, details of which are shown in Figures 4, and 6. It will be seen from these figures that the leading or longer end of the lever is recessed as at 2| to prevent the line L from slipping out of engagement with this end.

For the same purpose the outer end of the channel I8 is formed with a recess 22 to hold the loose end of the line L.

The base plate is provided with a cover plate 23 which can be secured by a nut 24 screwing onto the pivot l9.

As can be seen from Figure 2 the thickness of the lever 20 is slightly less than the depth of the cut away portion of the base plate so that the lever 20 is free to pivot between the cover plate and the base plate.

In operation the base plate is screwed to a wall and the line L to be locked is fitted under the lever 20 and into the channel It so as to engage the recesses 2| and 22.

The load on the line L acting in an upward direction is effective to rotate the longer end of the line.

It will be noticed that the strength of the looking action is proportional to the load on the line and to the difference in length of the two arms of the lever so that the greater the load the tighter is the line locked.

The line is released by taking off theload and then slipping the line sideways out of the device.

The line may be inserted and removed whether or not the cover plate is in position.

The notch l1 serves as a stop limiting the travel of the lever in anticlockwise direction.

The embodiment illustrated in Figures 7 to 10 comprises a wall plate indicated generally at 33 in the form of an annulus formed with a circular rebate 3|. It is also formed with three screw holes 32, 33 and 34 and with a radial bore 35.

Fitting within the wall plate 30 is a disc-like base plate, indicated generally at 36, formed with a rebate 31, co-operating with the rebate 3| of the wall plate, and with a boss 38.

The base plate 36 can be fitted into the annulus and, when the latter is screwed to a wall or the like, the base plate is rotatable in the wall plate. In order that the base plate may be locked in a predetermined angular position within the wall plate a pin 39 is provided which can be inserted through the bore 35 in the wall plate into a recess 40 formed in the base plate.

As in the case of the last embodiment the boss 38 is formed with a V-shaped cutaway 4|, 42 running into a notch 43 and a parallel sided channel 44.

At its centre the boss 38 carries a pivot 45 on which is a lever 46 similar in all respects to that illustrated in Figures 1-6. As before, the outer end 41 of the channel 44 is recessed or grooved as at 48 (Figure 9) to prevent the line from slipping out of engagement with this end. The leading end of the lever is similarly grooved.

The base plate is locked in its operative position on the wall plate by insertion of the pin 39 into the bores 35 and 40 and then functions in exactly the same way as the last described embodiment.

A cover plate 49 may be screwed onto the end of the pivot pin 45 if desired, although the deplate adapted to be affixed on awall orthe support, a base plate rotatably mounted on said wall plate whereby said baseplaflj e rn W coliiitercldcliwi s larly adjusted clockwise and with respect to said wall plate, said base plate having an open-sided channel ex'tendi'rig theflethrough between generally opposite portigns 9g the periphery thereof for receiving a 'line', the

base plate along one side of said channel m U tutmg an abutment, a imple lever havin a i f of unequal length pivoted to said base plate in saidchannelior swinging about ariraxistnormalto the plane of the base plateat apoint spacedfrorn said abutment for "engaging the -linef against said abutment, the shorter'of'th'e lever arms swinging against-"said line and towards" said abutmntin response to pull of said' line-against the lo; ger' of the lever armsfand releasable-locking nee engaging between said "plates "for maihtaini said base plate in angularly adjustable po use; whereby sai'dba se plate-may beadjuawi maintained: in'an' engmar es'm n-s accordance-with'the le'a'dof the" line." i "21 A l'ocking means for alinegbornprising an annular wall plate adapted-tobeiamxjed on a an" or the' like' eeppm a d'isc -sha dfbajsef plate ro tatably engaged i'n saida rmular I allplate whereby said base plate may be angularly adjusted clockwise and counter-clockwise with respect to said wall plate, said base plate having an opensided channel extending therethrough between generally opposite portions of the periphery thereoi for receiying a-li ne, the base plate along pne side (it aid channel cdnstituting an abutment a simple lever having arms of unequal length pivoted to said base plate in said channel at a point spaced tren said abutment for engaging the line against Said abutmiitTtl'ie shorter of the lever arms aga -inst line and towards said abut- 5 9 t in esponseto. pull of said line against the *fitirfbf ztheilever arms, and releasable pin means engaging through the periphery of said wall"'plates"'foimaintaining said base plate in 1 tgngu la-rly adjustable position, whereby said base 4p; te may be adjusted to and maintained in an angularpgsition selected in accordance with the lei-iicrtne line.

vIc'roR MARTIN References Cited in the file of this patent UNITED S '-I ATES PATENTS Numbe Nam ate 35110 3. McCormick Oct. 19', lags, 553559 1 3 111 July 7 13.96; 903,433 Baker Nov. 1o, 193131. 1,203,715 Doii slt Y V V I Nov. '7, 1916 1,276,365 d' jf s u er}; 1913, 1,456,712 Podjus May 2' 9', a rena Johnson 'c't. 1-7L'1j939 FOREIGN PATENTS Number Country pate 191 Great B ,"a Au 1 .8 13,429 GreatjBritain Get. 21, 18 

